Nut-lock.



D. SMITH.

NUT LOOK.

' APPLICATION IILED AUG. 2, 1910.

Patented'Jan. 10, 1911,

m w w 0 iina'rr AT% PAT ETQ.

DREW SMITH, OF KELLERMAN, ALABAMA.

NUT-LOCK.

Specification of Letters Patent.

Patented Jan. 1@, 1911.

To all whom it may concern:

Be it known that I, DREW SMITH, a citizen of the United States, residingat Kellerman, in the county of Tuscaloosa and State of Alabama,haveinvented certain new and useful Improvements in Nut-Locks, of which thefollowing is a specification.

This invention relates to nut locks, and refers particularly to a deviceadaptable for rail joints.

An object of the invention is to provide a nut look which necessitatesbut a slight change in the form of the usual bolt and nut now employed,and in providing a key of simple construction for cooperation with thebolt and nut to lock the same from movement relative to one another whenin position. I

The invention contemplates a simple form of nut lock which does notrequire attention when once in place, which can be easily and quicklylocked and released, and one which can be economically manufactured.

For a full understanding of the invention reference is to be had to thefollowing description and accompanying drawing, in which Figure 1 is aperspective view of the improved bolt and nut in a locked position. Fig.2 is a longitudinal section through the same as applied to a rail joint.Fig. 3 is an outer end view of the bolt and nut lock. Fig. a is a detailperspective view of the improved key.

Corresponding and like parts are referred to in the followingdescription and indicated in all the views of the accompanying drawingby the same reference characters.

Referring to the drawing the numeral 10 designates the web of a railwhich is provided against its opposite faces with the fishplates 11 and12.

The improved nut lock comprises a bolt 13 threaded at its outer end andprovided with a head 14. The head 14 is disclosed as resting against thefisl -plate 11, while the bolt 13 extends through the fish-plates 11 and12 and the web 10 of the rail, the threaded extremity of the boltprojecting beyond the fish-plate 12. The bolt 13 is provided with atransverse opening or channel 15 which is diametrically disposedtherethrough at a point spaced inwardly from the threaded extremity ofthe bolt. A nut 16 engages in threaded relation over the bolt 13 and isprovlded in its outer face with a plurality of depressions 17 Asdisclosed in the drawings the depressions 17 are preferably four innumber, which are arranged in opposite relation to one another. Thedepressions 17 in the nut 16 are adapted for registration with thechannel 15 when the nut 16 1S tightened against the fish-plate 12.

The locking member employed comprises a key 18 formed of a flattenedportion of metal engaging through the channel 15. One end of the key isturned outwardly at substantially right angles to the key to form a stop19 resting against the side of the bolt 13. The opposite extremity ofthe key 18 is provided with a block 20 serving as a locking medium andadapted for engagement in the depressions 17. The transverse channel 15is preferably of rectangular form and the key 18 is relatively thin soas to rest against the inner wall of the channel 15. The stop 19 carriesa tapering spring arm 21 extending into and through the channel 15. Thearm 21 engages against the outer wall of the channel 15 and holds thekey 18 against the opposite wall to secure the block 20 within thedepression 17.

In positioning the improved nut look upon a rail joint, the threadedbolt 13 is first passed through the fish-plates 11 and 12 and the rearweb 10. The nut 16 is fed over the threaded end of the bolt 13 andtightened against the fish-plate 12. The nut 16 is rotated sufficientlyto register one of the depressions 17 with one end of the channel 15.lhe key is now positioned by inserting the block 20 in one end of thechannel 15 and depressing the spring arm 21 toward the key 18. When thestop 19 strikes against the side of the bolt 13, the block 20 is freedfrom the channel 15 and, under the action of the spring arm 21 fallsinto the adjacent depression 17. The rotation of the nut 16 is thusarrested from movement in either di rection.

It is of course understood that the improved nut and bolt lock may beapplied to the end of a rod or a bolt of practically any form other thanthat disclosed in the accompanying drawing, so that the improved nut andbolt lock is applicable to other devices than rail joints.

Having thus described the invention what is claimed as new is 1. Anut-lock including a threaded bolt having a diametrically formed channeltherein, a nut engaging over the bolt and having spaced depressionsarranged diametrically opposite and communicating with the centralopening through the nut for registration With the channel in the bolt,and a key engaging in the channel and having an inwardly extending blockseating in the depressions of the nut at one end, and a stop formed uponthe opposite end to limit the movement of the key through the channel.

2. A nut-lock including a threaded bolt having a diametrically formedchannel therein, a nut engaging over the bolt having a centrallythreaded aperture and oppositely registering depressions in its outerface communicating With the aperture, a key engaging through the channelin the bolt having a stop upon one end to limit the movement of the keyin the channel, and a block upon its opposite end seating in theregistering depression of the nut, said key also having a divergingspring-arm upon one end for engagement against the outer Wall of thechannel to seat the block Within the de pression.

In testimony whereof, I afliX my signature in presence of Witnesses.

i J. W. GRAY.

